Exhaust gas reduction system of internal combustion engine and its control method

专利摘要:
Air generating means of an air compressor for generating air by a driven gear interlocked with the injection gear in order to reduce the exhaust gas by injecting compressed air into the combustion chamber during the explosion stroke of the diesel engine; An injection means of an air injection actuator connected to the air hose from the air generation means and installed in the engine to receive air and to spray the combustion chamber; The injection means is to provide an exhaust gas reduction device of an internal combustion engine comprising an electronic control unit for controlling the air injection for sensing the electrical signal from the piston position sensor and the engine speed sensor.
公开号:KR19990059933A
申请号:KR1019970080147
申请日:1997-12-31
公开日:1999-07-26
发明作者:박병구
申请人:정몽규；현대자동차 주식회사；
IPC主号:

专利说明:

Exhaust gas reduction system of internal combustion engine and its control method
The present invention relates to an apparatus for reducing exhaust gas of an internal combustion engine, and more particularly, to an apparatus for reducing exhaust gas of an internal combustion engine for reducing exhaust gas by injecting compressed air into a combustion chamber during an explosion stroke of a diesel engine.
In general, the fuel system of a diesel engine is composed of a fuel tank, a fuel filter, a fuel supply pump, a fuel injection pump, a fuel injection nozzle, and a pipe and a hose connecting these parts.
Diesel engines spontaneously ignite, so combustion occurs almost simultaneously across the front of the cylinder.
When the combustion process is expressed in terms of crank angle, it is classified into ignition delay period, explosion combustion period, combustion control period, and late combustion period.
Such a prior art has a problem in that graphite tends to be incompletely burned when overloaded.
In order to solve the problems of the prior art made as described above, an object of the present invention is to reduce the exhaust gas of the internal combustion engine by injecting compressed air into the combustion chamber during the explosion stroke of the diesel engine to reduce the exhaust gas To provide.
1 is a view showing an exhaust gas reducing device according to the present invention.
Figure 2 is a flow chart showing a control method of the exhaust gas reducing device according to the present invention.
The present invention for realizing this, and the air generating means of the air compressor for generating air by the driven gear interlocked with the injection gear,
An injection means of an air injection actuator connected to the air hose from the air generation means and installed in the engine to receive air and to spray the combustion chamber;
The injection means is to provide an exhaust gas reduction device of an internal combustion engine comprising an electronic control unit for controlling the air injection for sensing the electrical signal from the piston position sensor and the engine speed sensor.
The method for realizing the object of the present invention
Determining a distance P between the piston upper surface and the lower end of the cylinder head,
Detecting an engine revolution number (P0);
Determining whether the piston position and the engine speed are the same;
Stopping the air injection actuator if the piston position and engine speed are not the same;
When the piston position and the engine speed is the same to provide a control method of the exhaust gas reducing device of the internal combustion engine comprising the step of injecting air by operating the air injection actuator.
Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail.
1 is a view showing an exhaust gas reducing device according to the present invention, in which an air compressor 6, which is an air generating means for generating air by a driven gear 4 meshing with an injection gear 2, is installed. have.
An air injection actuator 14, which is an injection means, is installed in the engine 12 to be connected to the air compressor 6 by an air hose 8 so as to receive air and spray the air into the combustion chamber 10.
The air injection actuator 14 is provided so as to control the air injection of the electronic controller 20 that detects an electrical signal from the piston position sensor 16 and the engine speed sensor 18.
Referring to Fig. 2, the operation of the present invention made as described above, the distance (P) between the upper surface of the piston 22 and the lower end of the cylinder head 24 is determined by the piston position sensor 16. (S10)
In addition, the engine speed sensor 18 detects and determines the engine speed P0.
It is determined whether the position of the piston 22 by the piston position sensor 16 and the engine speed by the engine speed sensor 18 are the same (S30).
If the position of the piston 22 by the piston position sensor 16 and the engine speed by the engine speed sensor 18 are not the same, the operation of the air injection actuator 14 is stopped (S40).
When the position of the piston 22 by the piston position sensor 16 and the engine speed by the engine speed sensor 18 are the same, the air injection actuator 14 is operated to inject air into the combustion chamber 10. (S5)
Accordingly, by injecting low temperature air into the explosion stroke of the engine, nitrogen oxide and graphite emissions of the exhaust gas are reduced by reducing the temperature of the combustion chamber 10.
This invention is an invention that reduces the exhaust gas and graphite by injecting compressed air into the combustion chamber during the explosion stroke.

权利要求:
Claims (2)
[1" claim-type="Currently amended] Air generating means of an air compressor for generating air by a driven gear interlocked with the injection gear;
An injection means of an air injection actuator connected to the air hose from the air generation means and installed in the engine to receive air and to spray the combustion chamber;
The injection means comprises an electronic control unit for controlling the air injection for detecting the electrical signal from the piston position sensor and the engine speed sensor, exhaust gas reduction device of the internal combustion engine.
[2" claim-type="Currently amended] Determining a distance (P) between the piston upper surface and the lower end of the cylinder head, (S10)
Detecting an engine revolution number (P0), and (S20)
Determining whether the piston position and the engine speed are the same (S30).
If the piston position and the engine speed are not the same, stopping the operation of the air injection actuator (S40)
If the piston position and the engine speed is the same, the step of operating the air injection actuator to inject air (S50) control method of the exhaust gas reduction device of the internal combustion engine, characterized in that.

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同族专利:

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公开号 | 公开日

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
1997-12-31|Application filed by 정몽규, 현대자동차 주식회사

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1997-12-31|Priority to KR1019970080147A

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1999-07-26|Publication of KR19990059933A

优先权:

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申请号 | 申请日 | 专利标题

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KR1019970080147A|KR19990059933A|1997-12-31|1997-12-31|Exhaust gas reduction system of internal combustion engine and its control method|